Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

05 STI exhaust question

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Old Oct 19, 2004 | 11:11 AM
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xicema17x's Avatar
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Question 05 STI exhaust question

I was wondering if i would get boost creep if i changed my catback or axleback with a bigger exhaust pipe. Looking forward into changing the axle with the turboxs standard muffler, which has a 4 inch tip. Has anyone experienced anything when changing their exhaust?
Old Oct 19, 2004 | 11:39 AM
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creep is caused by the DP. So if ur getting just a catback or axleback, u need not worry about it.
Old Oct 19, 2004 | 11:45 AM
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What is the size of the stock downpipe again?
Old Oct 19, 2004 | 12:00 PM
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Its not so much as the size of it...its more of a DP type and design...read this...
https://www.i-club.com/forums/engine-power-ej25t-sti-2006-wrx-90/why-did-do-boost-creep-44825/
it should explain it all...
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